On the very rare occasion a series of events will lead to an outfield footballer needing to go in goal.

Phil Jagielka kept Arsenal at bay in what was a famous League Cup victory for the Blades in 2006, and more recently Harry Kane donned the gloves after scoring at hat-trick for Spurs in the Europa League in 2014.

But probably most famous of all, was the time Niall Quinn followed up his 20th goal of the season by saving a penalty (Man City vs Derby County, 1991).

"Five in the wall, lads. Someone's gonna have to take my place." (Image: Clive Rose)

Basically, what we're trying to say is that it's important at least one outfield player is capable of playing in goal.